I don't understand the page.
This is roughly what you'd see when you open an old MS-DOS program (.exe) in a text editor. They scrolled the page until something recognizable showed up. Which are the runtime errors that the Microsoft C-runtime can show when it has to abort the program due to an unrecoverable error. Like stack overflow.
The editor has a bit of trouble with some of the bytes in the file that are control codes in ASCII. Showing them with a ^ followed by a letter that's the code + 0x40, an old convention. So ^@ is 0x00, ^A is 0x01, ^C is 0x03, ^M is 0x0D (carriage return), etcetera. It displays 0x0A as-is, interpreted as a line-feed that terminates the line. Which gives clues to the editor's origin, it is a Unix editor. One way in which Unix and Dos/Windows are famously incompatible, a line-ending in Unix is "\n" but is "\r\n" in Windows. Noted by @badp, the color scheme suggests gedit was used.
Some of the runtime errors are still defined in modern Windows C/C++ programs that were built with Microsoft's C compiler. Like R6018. But not StackOverflow anymore, that's handled by the operating system today. Exception code 0xC00000FD, STATUS_STACK_OVERFLOW. Don't bother sending the error report to Microsoft, they already have a billion of them.
It reminds me more about the old
Error codes was defined in cmsgs.h for MS C compiler, for ages ago, talking DOS here.. Not sure if this is the correct reference, but anyhow close.